Overclocking The Vega

[Guest Anton2k]

Hi guy's duno much about Android/Linux kernels in terms of overclocking ability etc. I know the highest Overclock on the vega at the moment is 1.5ghz with the new CorvusKernel 0.2 but my question is, is the overclock limited to 1.5 by the kernel or can we make up our own SetCPU settings and overclock even more?

Just out of curiosity has any one here managed to get it passed 1.5? if so reply with your speed in ghz. Also what do you think will be the max the tegra chip can take (stable) i am estimating around 1.7 - 1.8ghz.

Before i finish up, a big thank you to all the guys who are developing roms etc for the vega, your work is really appreciated, keep it up!

P.s. Vote in the poll to see what speed you think the vega is capable of (stable).

- Anton, Haggis!

[Guest premieral]

Hi guy's duno much about Android/Linux kernels in terms of overclocking ability etc. I know the highest Overclock on the vega at the moment is 1.5ghz with the new CorvusKernel 0.2 but my question is, is the overclock limited to 1.5 by the kernel or can we make up our own SetCPU settings and overclock even more?

Just out of curiosity has any one here managed to get it passed 1.5? if so reply with your speed in ghz. Also what do you think will be the max the tegra chip can take (stable) i am estimating around 1.7 - 1.8ghz.

Before i finish up, a big thank you to all the guys who are developing roms etc for the vega, your work is really appreciated, keep it up!

P.s. Vote in the poll to see what speed you think the vega is capable of (stable).

- Anton, Haggis!

I am by no means technically adept but i believe the speed of the cpu has to be allowed in the kernel, before 1.5 became possible one member changed setcpu.txt to allow 1.5 from the then 1.2 but in all benchmarks it still only registered 1.2 so i dont think changing setcpu.txt file will do anything

[Guest premieral]

Hi guy's duno much about Android/Linux kernels in terms of overclocking ability etc. I know the highest Overclock on the vega at the moment is 1.5ghz with the new CorvusKernel 0.2 but my question is, is the overclock limited to 1.5 by the kernel or can we make up our own SetCPU settings and overclock even more?

Just out of curiosity has any one here managed to get it passed 1.5? if so reply with your speed in ghz. Also what do you think will be the max the tegra chip can take (stable) i am estimating around 1.7 - 1.8ghz.

Before i finish up, a big thank you to all the guys who are developing roms etc for the vega, your work is really appreciated, keep it up!

P.s. Vote in the poll to see what speed you think the vega is capable of (stable).

- Anton, Haggis!

Edit

Oops

Double post

Edited May 13, 2011 by premieral

[Guest SeiferTV]

I think1.5 Ghz is already a bit too much for stable use.

I wouldn't recommend that someone OC's it's vega at 1.5 Ghz at all times.

[Guest Minimonkey]

On smartbench the viewsonic gtablet is on 1.7ghz

[Guest mintvilla]

On smartbench the viewsonic gtablet is on 1.7ghz

i saw someone overclock the the xoom (same tegra processor i think) to 1.8ghz but am sure i remember reading that that was the highest stable speed, after that it got unstable.

i know the vega on the honeycomb aplha is set to 1.5ghz from the start, and i ran 1.4, then 1.5 on the corvus 5 rom without issue.

[Guest warriorscot]

Honestly any more than the 1.4 and I think it is going to start having issues if ran that long. I suspect that retail devices that clock higher are going to have sinks to help manage the heat better than the vega has they also tend to have metal alloy cases that are better able to conduct heat away from the CPU.

[Guest BadDroid]

Honestly any more than the 1.4 and I think it is going to start having issues if ran that long. I suspect that retail devices that clock higher are going to have sinks to help manage the heat better than the vega has they also tend to have metal alloy cases that are better able to conduct heat away from the CPU.

I over clocked to 1.5Ghz with the second Corvus kernel but decided to move back to the 1Ghz as at 1.5Ghz it wasn't stable and kept resetting itself to 216Mhz and staying at that speed until reboot (very slow and juddery at 216Mhz lol.

So imho at the moment I'm going to opt for an option that isn't in the poll: 1Ghz :unsure:

[Guest Anton2k]

Thanks for all the reply's guys, really interesting to hear all your different opinions. I my self have not tried the new 0.2 kernel that allows the 1.5ghz overclock. Instead i am on the older kernel that is set to 1.4ghz. Atm i have no issues everything seems stable(I use my vega mostly for web browsing and watching video in bed). I have noticed that the overclock has improved the ability to play hd content, hd content still is not playable but its getting better(i do hd tests lol, board).

I think if we do get the vega up to the 1.8 mark that it will become some what unstable, but this offers a good opportunity (for me anyway) to crack open the vega and try and find a more effective way of dissipating the heat(mod's etc).

Hopefully 1.5ghz isn't where the vega will stop. I would be interested in figuring out how to edit the kernel in order to achieve higher numbers and test it etc. Does any one know whats involved? i am a learning software developer if that go's for any thing.

Thank's Again - Anton

[Guest NeilLewis22]

I over clocked to 1.5Ghz with the second Corvus kernel but decided to move back to the 1Ghz as at 1.5Ghz it wasn't stable and kept resetting itself to 216Mhz and staying at that speed until reboot (very slow and juddery at 216Mhz lol.

So imho at the moment I'm going to opt for an option that isn't in the poll: 1Ghz :unsure:

That was a rom problem not your vega. when your system goes to sleep and wakes up it stays at the minium setting. I use to get it all the time but a fresh install fixed my issue. also use CPU master i think its easyer to use then setcpu and works really well

[Guest Maxwell4321]

That was a rom problem not your vega. when your system goes to sleep and wakes up it stays at the minium setting. I use to get it all the time but a fresh install fixed my issue. also use CPU master i think its easyer to use then setcpu and works really well

On the Corvus5 ROM with kernel 2, I used setcpu to set a min of 600 and a max of 1.5 and used the option to set on boot, everything ran fine with no defaulting to 216 at any time.

I think that 1.7 would be about max to remain stable

Edited May 14, 2011 by Maxwell4321

[Guest owenoliver1]

On the Corvus5 ROM with kernel 2, I used setcpu to set a min of 600 and a max of 1.5 and used the option to set on boot, everything ran fine with no defaulting to 216 at any time.

I think that 1.7 would be about max to remain stable

Id say 2.0 dual core heard it was done a clone of this tablet and it was fine the battery life is so long because its so low

[Guest Anton2k]

Id say 2.0 dual core heard it was done a clone of this tablet and it was fine the battery life is so long because its so low

Would be really cool & amazing if we could achieve 2ghz, we would be in essence doubling the performance. Again though at 2.0 i think we might have some stability issues, but then again that not to say we can't tinker with the heat sink.

[Guest simonta]

we would be in essence doubling the performance

You might get somwhere near according to some benchmarks dealing only with pure computational tasks and even then, you won 't get double because of other limitations in the chipset other than the CPU speed. In real life, the memory bus clocks and the hardware IO busses will get nowhere near. You might see a 40-50% increase which in real life will translate into 20-30% perhaps.

I struggle in day to day usage to see the difference between 1GHz and 1.5GHz and apart from "because I can", which I totally get, I wouldn't want to risk going anywhere near as high as 2.0. It's not about stability, it's about heat transfer. The Vega is not designed to dissipate large amounts of heat and that extra warmth you can feel on the case when overclocking translates to shorter component lives, and not just the CPU. There's a good reason why warranties are always voided when overclocking - failure rates on heavily clocked chips without additional cooling are very high.

The idea of overclocking until it becomes unstable then backing off is also flawed. It doesn't happen often but it's entirely possible to knacker a chip for good with just one excursion into instability. As the temperature rises, the internal resistance of the chip increases and the temperature rises which increases the resistance which....you can get "thermal runaway" in a heart beat then it's sayonara Vega. Been there, done it (on a PC). CPU fried in milliseconds. You can also cause damage which might not be apparent until some time in the future so you think it's all OK until you start getting FCs and corrupt file copies.

Typically, the chip manufacturers underclock by around 50% to decrease rejections on the production line. I'd say 1.5GHz is about as high as you want to go with this chipset.

Edited May 14, 2011 by simonta

[Guest dagrim1]

If it's the same as with cpus in personal computers I'd say it totally depends on each specific case. 1.5ghz is already an extreme achievement and I wouldn't want it to run at that speed all the time...

[Guest Anton2k]

Thank's Again for the reply''s guys. I can total see what you guys are getting at, 1.5 already is a really big leap in regards the to tablet form factor we have. Heat Dissipation is probably our biggest bottle neck we have in regards to overclocking our device, though i still think it would be fun to look a new ways of dissipating the heat(mods) though again there is only so far we can go with even that due to the very limited space we have to work with.

[Guest beegee1962]

I have no need to overclock my tablet. Fast enough with 1GHz. My ROM uses CorvusKernel 0.2 which allows OC, but I use SetCPU to keep the tablet running between 216MHz (idle & screen off) and 1GHz. No performance issues with these settings. I tried once with 1.5 GHz, but I didn't see any improvement in the apps I use (Gmail, Documents to go, FBReader, Paradise Island, Angry Birds, Navdroyd, ....). So I see no need for any risk by overclocking my CPU.

Thats IMHO!

Edited May 14, 2011 by beegee1962

[Guest Anton2k]

I have no need to overclock my tablet. Fast enough with 1GHz. My ROM uses CorvusKernel 0.2 which allows OC, but I use SetCPU to keep the tablet running between 216MHz (idle & screen off) and 1GHz. No performance issues with these settings. I tried once with 1.5 GHz, but I didn't see any improvement in the apps I use (Gmail, Documents to go, FBReader, Paradise Island, Angry Birds, Navdroyd, ....). So I see no need for any risk by overclocking my CPU.

Thats IMHO!

I can see your logic, don't fix what isn't broke lol. For me overclocking is more of a hobby, though i don't develop the kernels n stuff the actual processes of selecting the MHz u want to clock to give me a sense of achievement lol.